1) The development of artificial intelligence (AI) has led to advancements in areas such as machine learning, natural language processing, and computer vision.

2) The Eiffel Tower can be 15 cm taller during the summer due to thermal expansion.

3) The novel "To Kill a Mockingbird" by Harper Lee has been translated into more than 40 languages and has sold over 40 million copies worldwide.

4) Greek mythology includes a wide array of gods and goddesses, such as Zeus, Poseidon, Athena, Aphrodite, and Apollo. These deities were believed to govern various aspects of life and the natural world and were often depicted with human characteristics and engaging in dramatic stories and conflicts.